- 1 large onion weighing 150 g (5½ oz)
- 400 g
- Preheat the oven to 250°C/500°F/Mark 10. Peel the onion and slice it into fine rings. Soften in half the oil over a moderate heat, stirring with a wooden spatula. Do not allow the onion to brown.
- Using a potato-peeler, remove alternate